Perfect World is the third Japanese studio album (fifth overall) by South Korean girl group Twice.

[3] On May 19, 2021, a photo teaser was posted on Twice's Japanese social media accounts.

[5][6] Two music video teasers for the title track, "Perfect World", were posted before its release on June 29.

[11] To promote the album, they performed "Perfect World" on Music Station Summer Fes, on August 20.

[12] Jeongyeon was absent from both events, as she was taking a health-related hiatus due to panic disorder.